The purpose of this study was to develop Vineland Adaptive Behavior Scales for Korean children (EWHA-VABS) based on original VABS expended form. The scale was developed in the hope that it would be used as an essential tool for the identification and ...
The purpose of this study was to develop Vineland Adaptive Behavior Scales for Korean children (EWHA-VABS) based on original VABS expended form. The scale was developed in the hope that it would be used as an essential tool for the identification and diagnosis of adaptive children and maladaptive children in acquiring their life-living developmental skills.
Therefore, EWHA-VABS was developed in two major procedures: construction of a preliminary scales, followed by construction, items in the original vineland adaptive behavior scale were translated and selected using the method of back translation. After items were finally selected, a test was carried out, in order to validate each item on a sample consisting of 746 children between the age of 0 to 12, from September to October, 1992. Items were examined primarily on the basis of discriminatory effect.
Next, the standardization procedure of the preliminary, Vineland adaptive behavior scale was conduced, involving a sample of 746 students from the same population. Reliability and validity of the scale were examined, in addition to such statistics as scaled scores by age to be used for norm preparation and interpretation.
First, the distribution of raw-scores at each age level was concerted to a normalize scale having a mean of 100 and standard deviation of 15, and named as a standard score. Each standard score was classified as low, moderate, adequate, moderately high, high according to the percentile ranks of the standard score.
Second, age equivalents for subdomains were constructed by computing the mean domain raw scores for 24 age groups and by plotting the means on arithmetic graph paper.
Third, average split-half coefficients for each eleven subtest were computed to range from .30 to .97. Average Cronbach alpha coefficient for each eleven subtest as found to from .60 to .98. Also, the standard error of the measurements had been estimated and each subcale intercorrelation had been estimated. The intercorrelation coefficients of the eleven subtests for each of the twelve age group showed and evidence that those subscales measured were independent of/from each other.
Eventually, those results had affirmed that Korean Vineland adaptive behavior (EWHA-VABS) scales are very reliable.